摘要
通过对北京市大兴区126个森林资源固定样地调查,以2012年固定样地株数为基础数据进行分析,结果显示:126个样地共有26个树种,2020年12月调查,保存率为90%~100%的树种有香花槐(Robinia pseudoacia cv.‘Idaho’)、国槐(Sophora japonica)、新疆杨(Populus alba var.pyramidalis)、榆树(Ulmus pumila)等9个树种;保存率为80%~89.9%的树种有毛白杨(Populus tomentosa)、刺槐(Robinia pseudoacacia)等5个树种;保存率为60%~79.9%树种有银杏(Ginkgo biloba)、油松(Pinus tabuliformis)、臭椿(Ailanthus altissima)等5个树种;保存率低于60%的树种有水杉(Metasequoia glyptostroboides)、悬铃木(Platanus acerifolia)、泡桐(Paulownia fortunei)等7个树种。调查结果完善了大兴区森林资源数据,更精准地掌握了森林资源动态变化。
According to the survey of 126 forest resource fixed plots in Daxing District,Beijing,based on the data of the permanent plots in 2012,result shows that there are 26 tree species in 126 plots.The inventory in December 2020 shows that there are nine tree species with the preservation rate of 90-100%,such as Robinia pseudoacia,Sophora japonica,Populus alba&Ulmus pumila;there are five tree species,whose preservation rate is from 80%to 89.9%,such as Populus tomentosa,Robinia pseudoacacia&Populus×euramericana cv.‘74/76’;there are five tree species,whose preservation rate is from 60%to 79.9%,such as Ginkgo biloba,Pinus tabulaeformis&Ailanthus altissima;the species with the preservation rate lower than 60%included seven species such as Metasequoia glyptostroboides,Platanus acerifolia and Paulownia fortunei.This survey has effectively improved the data of forest resources in Daxing District,more accurately grasped the dynamic changes of forest resources.
作者
刘颖
Liu Ying(Beijing Yijingxuan Landscaping Co.,Ltd.,Beijing 102600,China)
出处
《防护林科技》
2021年第2期47-49,83,共4页
Protection Forest Science and Technology
关键词
大兴区
森林资源
固定样地调查
树种
保存率
Daxing District
forest resources
permanent sample plot inventory
tree species
preservation rate
